Adhesive film and display member including the same
AssigneesSamsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
InventorsSung Hyun MUN, Byeong Do KWAK, Il Jin KIM, Ji Ho KIM, Hyung Rang MOON, Gwang Hwan LEE, Ik Hwan CHO, Jae Hyun HAN
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Abstract
An adhesive film and a display member, the adhesive film being formed of an adhesive composition that includes a monomer mixture comprising a hydroxyl group-containing (meth)acrylate and a comonomer, wherein the adhesive film has a recovery rate of about 40% to about 99%, the recovery rate being determined according to Method A as described herein, and wherein the adhesive film has a bubble generation area of about 0%, the bubble generation area being determined according to Method B as described herein.
Claims20
An adhesive film formed of an adhesive composition that includes a monomer mixture, the monomer mixture comprising:
- a hydroxyl group-containing mono(meth)acrylate, the hydroxyl group-containing mono(meth)acrylate including:
- a C1 to C20 alkyl group-containing (meth)acrylic acid ester having at least one hydroxyl group, a C5 to C20 cycloalkyl group-containing (meth)acrylic acid ester having at least one hydroxyl group, and/or a C6 to C20 aryl group-containing (meth)acrylic acid ester having at least one hydroxyl group, and
- a comonomer, the comonomer including:
- an alkyl (meth)acrylate monomer, an ethylene oxide-containing monomer, a propylene oxide-containing monomer, an amine group-containing monomer, an amide group-containing monomer, an alkoxy group-containing monomer, a phosphoric acid group-containing monomer, a sulfonic acid group-containing monomer, a phenyl group-containing monomer, and/or a silane group-containing monomer, the comonomer having a glass transition temperature (Tg) of about −150° C. to about 0° C.,
- wherein the adhesive film has a recovery rate of about 40% to about 99%, the recovery rate being determined according to Method A as described herein,
- wherein the adhesive film has a bubble generation area of about 0%, the bubble generation area being determined according to Method B as described herein, and
- wherein the adhesive film has a storage modulus after curing of about 10 kPa to about 1,000 kPa at an entire temperature range of −20° C. to 80° C.
An adhesive film, comprising:
- a hydroxyl group-containing (meth)acrylic copolymer formed from a monomer mixture including:
- a hydroxyl group-containing mono(meth)acrylate, the hydroxyl group-containing mono(meth)acrylate including a C1 to C20 alkyl group-containing (meth)acrylic acid ester having at least one hydroxyl group, a C5 to C20 cycloalkyl group-containing (meth)acrylic acid ester having at least one hydroxyl group, and/or a C6 to C20 aryl group-containing (meth)acrylic acid ester having at least one hydroxyl group, and
- a comonomer, the comonomer including an alkyl (meth)acrylate monomer, an ethylene oxide-containing monomer, a propylene oxide-containing monomer, an amine group-containing monomer, an amide group-containing monomer, an alkoxy group-containing monomer, a phosphoric acid group-containing monomer, a sulfonic acid group-containing monomer, a phenyl group-containing monomer, and/or a silane group-containing monomer, the comonomer having a glass transition temperature (Tg) of about −150° C. to about 0° C.;
- and
- nanoparticles having an average particle diameter of about 5 nm to about 400 nm,
- wherein the adhesive film has a haze of about 4% or less according to ASTM D1003-95 for a specimen thickness of about 100 μm, and
- wherein the adhesive film has a storage modulus after curing of about 10 kPa to about 1,000 kPa at an entire temperature range of −20° C. to 80° C.
Dependencies are inferred from the claim text.